Sources Sought Draft SOW.pdf

Chiller Replacement Statement of Work

1.1 The existing chilled water system that supports the Close In Weapon Systems (CIWS) maintenance training at Naval Air Station Oceana Dam neck Annex building 543 is in dire need of replacement. The existing system is comprised of two 20 ton chiller system (primary/alternate) that are located outside the south end of the building (see photo 1). The chiller system provides cooling to four CIWS mounts inside the building. The turnkey project includes removal and disposal of existing chilled water systems equipment (pumps, motors, make-up tank, pipe, etc.) and replacing with new equipment that meets or exceeds existing equipment specifications, as well as work in the Virginia Beach waterfront harsh environment (saltwater/air).

To ensure the existing system does not fail and impact training, a rental chiller is currently installed and is funded until Nov 9, 2020. This project must be completed by October 31, so additional funding for chiller rental is not required. No work to the rental system is required, however, coordination with rental provider may be needed to transfer chiller water hoses.

Work identified in this SOW is estimated to take three weeks and can be completed by a commercial Heating Ventilation Air Conditioning (HVAC) company.

1.2 Contractor to provide all materials, labor, and supervision required to perform all work.

a. Properly drain/fill chilled water system in accordance with environmental policy.

b. If crane/forklift services are required to place equipment, CSCSU Dam neck will liaison with local public works to arrange services. Funding for crane/forklift service will be handled by CSCSU Dam neck.

c. Replace safety disconnect boxes, wire, and conduit associated with the systems (see photo2).

d. All pipe inside and outside to be replaced, where applicable install pipe insulation.

e. Workplace to be cleaned up end of each work day.

f. Provide schematic drawing of newly installed system and provide up to two hours of training to CSCSU Dam neck.

1.3 CSCS estimates the cost of the project to be less than $200k.

a. (2) 20 ton chiller

b. (4) pumps

c. Demo equipment

d. Wire/safety/conduit/cutout boxes

e. Exterior piping/insulation

f. Interior piping

g. Miscellaneous

h. Labor/Profit

1.4 Existing equipment:

Air-Cooled Chiller Unit Capacity - 20 Ton Refrigerant Type – R-22 40 Lbs. Self-contained Fan Motors (Qty 2) Starter type - across the line Voltage – 460/3/60 44 MCA 60 MOCP Coil Fins – Micro-Channel (Electro Fin Seacoast Coating) Pumps (Qty 2) (Base-mounted, end-suction) – 48 gpm Fluid type – Water/30% Glycol Design Ambient Air Temperature – 95 Deg F Vibration Isolators One existing Chiller is manufactured by Trane and has the following specifications:

Model – CGAFC204AHA/000DEO Serial # CO3L10089 The other existing Chiller/pump is manufactured by Carrier, same description, and has the following specifications:

Model – 30GT-025-600 Serial # 1194F88404 Refrigerant Type – R-22 40 Lbs. Self-contained.

Voltage – 460/3/60 60.7 MCA 100 MOCP Pumps (Qty 2) (Base-mounted, end-suction) – 48 gpm